E.g.f. satisfies: A(x) = Sum_{n>=0} x^n/n! * Product_{k=1..n} A(k*x).

A230317

E.g.f. satisfies: A(x) = Sum_{n>=0} x^n/n! * Product_{k=1..n} A(k*x).

Terms

    a(0) =1a(1) =1a(2) =3a(3) =19a(4) =215a(5) =4016a(6) =119092a(7) =5503205a(8) =393154477a(9) =43298176708

External references